Geometry Chart

It's no secret that Lake makes some of the best winter cycling shoes out there, and the MXZ 303 edition certainly lives up to their lofty reputation. Featuring Pittards WR100 leather, Thinsulate insulation, and Thermasol insoles, your feet will certainly appreciate being kept dry and toasty warm no matter how inclement Mother Nature gets. If you live somewhere where snow, miserable temperatures and nasty winds are the norm in the winter months, riding outdoors will remain very much a viable option when you have a pair of these shoes in your clothing arsenal.

I received mixed reviews about how to size this shoe. Typically wear 44.5-45.5 and generally on the small end for cycling shoes and Nordic ski boots but on the larger end for running shoes. Ended up going with a 46 which fit perfectly. It is roomy enough for 2 socks but I was not swimming. I even did some hike a bike without excessive foot movement. I've used this boot at 25 below F. One that occasion I wore a thin liner sock, a thin vapor barrier and a regular wool sock with neoprene outer booties. One foot was cold but the other was OK. In the 0-10 below F range I wore the same socks without the booties and had warm feet.

Bought these for winter commuting in the Washington DC area. I've been wearing them for a couple of months. Definitely keep your feet warm in cold weather down into the teens. But used them through two winter rainstorms. After five miles, my feet were soaked. Didn't expect that from shoes this expensive.

I ordered these after reading the reviews on Nashbar, and took the advice to go one size larger than my normal cycling shoes. I take 44 in a cycling shoe and ordered 45 for these boots. They fit great with a slightly thicker sock than a summer cycling sock. Very comfortable and warm, I wish I had bought winter cycling boots years ago instead of suffering cold feet with just shoe covers over my cycling shoes.

I had the original MXZ300's that lasted 10 years, these are without a doubt the best winter shoe's on the market. If you ride in the winter, do not hesitate to get these. They are truly excellent! I have no doubt they will hold up just as well as my old set.

The cold weather is nearly gone here in southeastern Michigan, but numerous rides with these boots have sold me on their warmth, water-resistance and comfort. Using them on my fatbike with a platform pedal and liked that so much I decided against my clipless pedals. Sizing worked well, for me, by ordering one size larger. I like the Boa system and expect to get many seasons from these boots.

Was worried about sizing since consensus was they run small. I ordered the same size as my shimano shoes and fit was just about the same. I think Shimano may run a little on the large size. Have used these on night rides in the teens and have been relatively comfortable in them, 1.5 hrs plus. I don't care to double up on socks only a pair of midweight merino wool socks and I am good. Because of their bulk, toe overlap and crank arm rubbing have occurred.

Just got these, took them out in relatively warm winter weather (40 degrees) last weekend. Easy to put on, fit well (bought 43, normally wear 42 in road shoes). My feet were more than warm enough, looking forward to seeing how they perform when it's 20 degrees colder. The instructions for cleat attachment stated that I should use the shim with crank brother cleats, which worked fine on the bike, but the tread on the soles wasn't deep enough to keep the cleats from hitting the ground a little when off the bike and walking.

This is my second pair - last year I bought a pair, size 45, my normal shoe size, and they were far too small. I sold them and bought 48's which are a little too big, but now have plenty of room to add a second pair of socks - though I've not needed that. These shoes are great, keeping my toes nice and warm and dry for hours in single digit temps. Good price to considering the competition.